Honeywell System 800 Operator's Manual page 19

Light indication
Fault
Power Fault
Fault
Sounder Fault
Fault
System Fault
typical
message(s)
Mains supply
failed
or
Battery
disconnected.
Master alarm 1
/ 2 open /
short
System
processor
failure
Meaning
The mains or back
up battery supply to
the panel has failed.
There is an open or
short circuit fault on
the master alarm
sounder circuit 1 or
2 connected to the
panel.
The processor
controlling the
control panel has
failed.
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